EP0225702A1 - Kraftfahrzeugtürschloss - Google Patents

Kraftfahrzeugtürschloss Download PDF

Info

Publication number
EP0225702A1
EP0225702A1 EP86308112A EP86308112A EP0225702A1 EP 0225702 A1 EP0225702 A1 EP 0225702A1 EP 86308112 A EP86308112 A EP 86308112A EP 86308112 A EP86308112 A EP 86308112A EP 0225702 A1 EP0225702 A1 EP 0225702A1
Authority
EP
European Patent Office
Prior art keywords
bolt
door
assembly
latch
pawl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP86308112A
Other languages
English (en)
French (fr)
Inventor
Philip Swingewood Jeavons
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ArvinMeritor Light Vehicle Systems UK Ltd
Original Assignee
Rockwell Automotive Body Components UK Ltd
Rockwell Light Vehicle Systems UK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rockwell Automotive Body Components UK Ltd, Rockwell Light Vehicle Systems UK Ltd filed Critical Rockwell Automotive Body Components UK Ltd
Publication of EP0225702A1 publication Critical patent/EP0225702A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/02—Power-actuated vehicle locks characterised by the type of actuators used
    • E05B81/04—Electrical
    • E05B81/06—Electrical using rotary motors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
    • E05B81/16—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on locking elements for locking or unlocking action
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/24—Power-actuated vehicle locks characterised by constructional features of the actuator or the power transmission
    • E05B81/32—Details of the actuator transmission
    • E05B81/40—Nuts or nut-like elements moving along a driven threaded axle
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
    • E05B81/66—Monitoring or sensing, e.g. by using switches or sensors the bolt position, i.e. the latching status
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/1043—Swinging
    • Y10T292/1044—Multiple head
    • Y10T292/1045—Operating means
    • Y10T292/1047—Closure

Definitions

  • This invention relates to latches for vehicle doors.
  • a vehicle door latch of the kind including a latch bolt for interaction with a striker formation of the door frame in use, the bolt in a latched position keeping the door fully closed, retention means cooperating with the bolt to secure it at the latched position, and release means connectible with a door handle or other operating means to actuate the retention means for freeing the bolt to allow the door to open, said latches being hereinafter referred to as "latches of the kind described".
  • the object of the invention is to provide a latch of the kind described which is of simple construction and economical to manufacture and install; which gives particularly secure fastening of the door for added safety, e.g. on impact with the door, and resistance to unauthorised entry; which is durable and reliable in use; and which can readily be adapted to servo operation e.g. in a central door locking system and/or be readily provided with sensor means for automatic monitoring of its operation.
  • latch bolt is a rotatably mounted fork or claw having a mouth in which a cylindrical portion of the striker formation is received it is contemplated that the invention may be applicable to latches having rectilinearly sliding or other forms of bolt.
  • a vehicle door latch of the kind described in which the retention means has first and second pawl members each resiliently urged independently of the other into coacting relationship with the bolt, the release means acting to shift both pawl members to free the bolt for movement from the latched position.
  • said pawl members co-act respectively with separate engaging faces of the bolt.
  • first pawl member acts to block movement of the bolt in a direction away from the latched position when the bolt and striker reach a safety position at which the door is not fully closed in use and that the second pawl member acts to block movement of the bolt when the latter is at the latched position.
  • each pawl member makes only one unidirectional movement during each full latching cycle; conveniently said movement is rectilinear through rotary or other translatory movement is also contemplated.
  • the pawl members move in paths intersecting the plane in which the latch bolt moves e.g. they move in paths normal to said plane so that they are subjected to shear forces when in coacting relationship with the bolt.
  • a door latch of the kind described in which the retention means is moved relative to the bolt by lateral translation within the body of the latch, the release means being enclosed within said body so as to render more difficult any attempt to release the latch or interfere with the latch mechanism in unauthorised manner e.g. to break into the vehicle when locked.
  • a latch according to the invention as defined by either of the aspects referred to above may further include a) servo operating means in the form of a power operated actuator built into the body of the latch for selective operation of the release means and/or connection thereof with a door handle or other manual operating means, and/or b) sensor means for monitoring operation of the latch by response to the positioning of the bolt in the latch body, in particular providing a signal according to whether the bolt is at the fully latched position or not at that position e.g. at the safety position.
  • the release means includes a formation of the latch which is pushed inwardly of the latch body to shift the retention means and free the bolt, said formation being actuated by a push-rod or the like connected to a door handle and having an end in abutment with said formation but not otherwise linked thereto whereby in use any bending or other distortion or displacement of the end of the rod away from the latch, e.g. due to impact by an occupant of the vehicle on an inner face of the door in a collision or other accident, does not cause release of the latch.
  • a vehicle door latch of the kind described incorporating the invention includes a strong box-like casing or body 10 which substantially encloses the entire mechanism of the latch and which may be formed as an assembly of mouldings of high duty plastics.
  • a slot 11 (Figure 1) extends along a lower side portion of the body from a forwardly directed mouth 12 for receiving a door post mounted striker, a coacting part 13 of which is indicated in Figures 1 and 3, in known manner.
  • a latch bolt 14 in the form of a rotatably mounted fork or claw formation is pivoted on a shaft 15 extending laterally of body 10 so that it rotates in a plane normal to the axis of striker part 13, the latter being received in a generally radially outwardly directed gap 16 of the bolt, again in known manner.
  • Bolt retention means of the latch comprises a pair of pawl members which coact with respective engaging faces of bolt 14 as described hereafter.
  • the pawl members take the form of first and second cylindrical metal plungers 20, 21 located in respective bores of body 10 parallel to shaft 15 and at almost diametrically opposite positions relative thereto to the back and front of the shaft respectively.
  • Each plunger is springloaded so that each is resiliently urged independently of the other for movement in paths which intersect the plane of rotation of bolt 14 at right angles.
  • a release fork 26 is located for angular movement on a cross shaft 27, said shaft being able to rotate independently of the fork.
  • the fork has a pair of downwardly depending first and second limbs 28, 29 which coact respectively with headed proximal end parts 20a, 21a of plungers 20 and 21, thus angular movement of fork 26 will withdraw both plungers simultaneously out of their coacting relationship with bolt 14 to free the latter for rotation.
  • the fork includes an integral operating arm 30 which projects upwardly within body 10 for actuation by an interior door handle as described hereafter.
  • crank arm 31 which will be linked to an exterior handle of the door in use, operation of the latter causing angular rotation of shaft 27.
  • Mechanical key operated exterior locking mechanism can be incorporated in which case operation of the door key will selectively interconnect or free shaft 27 from driving engagement with the release fork 26, when shaft 27 is free to rotate independently of fork 26 plungers 20 or 21 cannot be withdrawn by operation of the exterior door handle i.e. the door is locked (though the fork can still be displaced by actuation of its integral arm 30 i.e. by use of the interior door handle).
  • locking is carried out by remote control, e.g. from an electrically powered central locking system of known type, by a servo actuator, in this case a small electric motor 35 built into the upper part of body 10.
  • Motor 35 drives a worm shaft 36 through a gear train 37 as best seen in Figure 4, said shaft carrying a follower 38 which is shifted along the shaft as it rotates.
  • Follower 38 coacts with a drive dog 39 in sliding engagement with a central region of cross shaft 27, the dog being selectively shifted longitudinally of shaft 27 by the operation of motor 35 in forward or reverse directions to make or break driving connection between cross shaft 27 and the release fork 26, thus unlocking or locking the latch respectively according to whether fork 26 can be displaced by operation of the exterior door handle.
  • trim panels or other interior facings or walls of vehicle doors are usually formed of material of light gauge and/or low strength and have little resistance to buckling or damage on impact from the inside of the car.
  • Safety authorities are becoming increasingly concerned about the risk of occupants of the vehicle being thrown against the doors in an accident, particularly in cases of sideways collision, with the danger that the door may open and the occupant be thrown out.
  • the operating arm 30 of release fork 26 presents a flat abutment face which is directed towards a guide opening 45 in an upper part of the inner side wall of body 10 i.e. directed towards the interior of the door when fitted.
  • a rubber grommet 46 is located in opening 45 to reduce rattling and noise and, in use, the end part of an operating pushrod 47 locates in grommet 46 so that the tip of the rod abuts arm 30 to move fork 26 angularly and release the latch when the interior door handle is operated.
  • Arm 30 is resiliently urged toward opening 45 by a spring 48. If pushrod 47 is bent or displaced laterally this will tend to withdraw its end from opening 45 but, as it is not linked to arm 30, the latter will not be displaced and the door will remain fully fastened.
  • This example of the invention also includes sensor means for monitoring its operation in the form of a sensor microswitch (not shown) within body 10 actuated by a sensing plunger 50 (figure 3) which is urged into camming engagement with the periphery of a disc formation 51 rotating in common with bolt 14.
  • a sensing plunger 50 (figure 3) which is urged into camming engagement with the periphery of a disc formation 51 rotating in common with bolt 14.
  • plunger 50 coacts with a notch in the periphery of formation 51 to actuate the switch, thus providing a signal derived directly from the latch position showing that the door is fully closed.
  • the switch may, of course, be arranged to be on or off at this position and the signal so derived may be employed in various ways in connection with the servo actuating mechanism of the associated doors and/or the other doors of the vehicle and/or in connection with other facilities.
  • circuits connected to the switch may provide a warning indication that one or more of the vehicle doors are incompletely closed and/or to inhibit operation of a central locking system if any door is not fully latched and/or operating an interior courtesy light or the like when a door opens.
  • the sensor switch may also be used in other ways, e.g.
  • plunger type pawl means are preferred as the retention means of the invention as giving maximum security and simplicity and reliability of operation it is to be understood that other forms of first and second pawl members could be used in coaction with the latch, for example cam shaped pawls which are rotated to bring them into or out of coacting relationship with engaging faces or other formations of the bolt.
  • each pawl member is shifted once only in one direction and over a relatively short distance during each latching cycle, thus their inertia is low with corresponding enhanced speed of response and reduced noise levels during operation.
  • the invention provides an extremely secure latch both from the point of view of the safety of the occupants of the vehicle and from the point of view of the safety of the vehicle itself when left unattended.
  • the latch can always be released by use of the interior door handle due to the latter acting on the release fork 26, it will be appreciated that in an alternative arrangement the interior handle may be connected to operate the cross shaft 27 in the same way as the exterior handle thus preventing the door from being opened when locked using either handle. This may be desirable (or may be required by regulations in some countries) for example in the case of the rear doors of a vehicle e.g. for child safety.
  • a power actuator in the form of a rotary electric motor
  • other forms of power actuator may be used, for example a solenoid or a pneumatic or other fluid driven actuator.

Landscapes

  • Lock And Its Accessories (AREA)
EP86308112A 1985-10-25 1986-10-20 Kraftfahrzeugtürschloss Withdrawn EP0225702A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8526426 1985-10-25
GB08526426A GB2182380B (en) 1985-10-25 1985-10-25 Vehicle door latch

Publications (1)

Publication Number Publication Date
EP0225702A1 true EP0225702A1 (de) 1987-06-16

Family

ID=10587289

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86308112A Withdrawn EP0225702A1 (de) 1985-10-25 1986-10-20 Kraftfahrzeugtürschloss

Country Status (6)

Country Link
US (1) US4824152A (de)
EP (1) EP0225702A1 (de)
JP (1) JPS63501231A (de)
AU (1) AU6479386A (de)
GB (1) GB2182380B (de)
WO (1) WO1987002738A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0364936A2 (de) * 1988-10-20 1990-04-25 BOMORO Bocklenberg & Motte GmbH & Co. KG Kraftfahrzeug-Türschloss
FR2701728A1 (fr) * 1993-02-19 1994-08-26 Coutier Moulage Gen Ind Serrure de porte ou similaire et, notamment, de véhicule automobile.
EP2688242A1 (de) 2012-07-20 2014-01-22 Alcatel Lucent Verbessertes Verfahren zur Berechnung eines eingeschränkten Pfades in einem Netzwerk

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207698B (en) * 1987-08-07 1990-11-28 Rockwell Automotive Body Co Vehicle door latches and locking mechanism
JPH0735708B2 (ja) * 1987-11-30 1995-04-19 株式会社大井製作所 自動車用ドアロック装置
DE8816808U1 (de) * 1988-07-12 1990-08-23 Kiekert Gmbh & Co Kg, 5628 Heiligenhaus, De
JP2511115B2 (ja) * 1988-07-21 1996-06-26 アイシン精機株式会社 ドアロツク装置
JP3023278B2 (ja) * 1994-05-24 2000-03-21 三井金属鉱業株式会社 自動閉扉機構付車両ドアロック装置
GB9802955D0 (en) * 1998-02-11 1998-04-08 Rover Group A motor vehicle door locking system
US6786070B1 (en) * 1999-03-05 2004-09-07 Sirattec Security Corporation Latch apparatus and method
US6463773B1 (en) * 1999-03-05 2002-10-15 Strattec Security Corporation Electronic latch apparatus and method
CA2299921A1 (en) 1999-03-05 2000-09-05 Strattec Security Corporation Modular latch apparatus and method
US6409238B1 (en) 2000-04-26 2002-06-25 Illinois Tool Works Inc. Anti-rattle structure for door handle
US6575505B1 (en) 2000-10-25 2003-06-10 Strattec Security Corporation Latch apparatus and method
US6776442B2 (en) 2001-01-09 2004-08-17 Strattec Security Corporation Latch apparatus and method
GB2409705B (en) * 2003-12-31 2006-09-27 Honeywell Int Inc Latch mechanism with environmentally protected portion
JP2008530407A (ja) 2005-02-18 2008-08-07 メリター・テクノロジー・インコーポレーテッド ラッチ組立体
FR2882773B1 (fr) * 2005-03-01 2009-01-16 Valeo Securite Habitacle Sas Serrure ayant un seul commutateur
WO2008144904A1 (en) * 2007-05-25 2008-12-04 Magna Closures Inc. Decklid latch with electromechanically actuated snowload lever

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1238050A (de) * 1968-08-01 1971-07-07
US3601883A (en) * 1970-06-08 1971-08-31 Gen Motors Corp Method of assembling closure latches

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1412544A (en) * 1917-05-28 1922-04-11 James R Shirreffs Limiting device for spotlights
US1352762A (en) * 1919-10-31 1920-09-14 August J Schultze Universal lock and latch
US3334935A (en) * 1965-07-02 1967-08-08 Chrysler Corp Door latch
US3751088A (en) * 1971-05-24 1973-08-07 Schlage Lock Co Electromagnetic lock

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1238050A (de) * 1968-08-01 1971-07-07
US3601883A (en) * 1970-06-08 1971-08-31 Gen Motors Corp Method of assembling closure latches

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0364936A2 (de) * 1988-10-20 1990-04-25 BOMORO Bocklenberg & Motte GmbH & Co. KG Kraftfahrzeug-Türschloss
EP0364936A3 (en) * 1988-10-20 1990-12-12 Bomoro Bocklenberg & Motte Gmbh & Co. Kg Motor vehicle door lock
FR2701728A1 (fr) * 1993-02-19 1994-08-26 Coutier Moulage Gen Ind Serrure de porte ou similaire et, notamment, de véhicule automobile.
EP2688242A1 (de) 2012-07-20 2014-01-22 Alcatel Lucent Verbessertes Verfahren zur Berechnung eines eingeschränkten Pfades in einem Netzwerk

Also Published As

Publication number Publication date
WO1987002738A1 (en) 1987-05-07
GB8526426D0 (en) 1985-11-27
GB2182380A (en) 1987-05-13
GB2182380B (en) 1988-09-14
US4824152A (en) 1989-04-25
JPS63501231A (ja) 1988-05-12
AU6479386A (en) 1987-05-19

Similar Documents

Publication Publication Date Title
US4824152A (en) Vehicle door latch
EP1786999B1 (de) Kraftbetriebene auslöserdoppelverriegelung
EP1215064B1 (de) Mittig schliessbare doppelt aufgehängte Türvorrichtung für Fahrzeuge
EP0693605B1 (de) Verriegelungseinrichtung mit einer Riegelfunktion
US6523376B2 (en) Lock, in particular for motor vehicle doors
US7311341B2 (en) Lock mechanism
US5066054A (en) Motor-vehicle door latch with antitheft feature
US20100235057A1 (en) Universal global latch system
US20150284977A1 (en) Motor vehicle door lock
EP0368290A2 (de) Verriegelung für Kraftfahrzeugtür
EP0775793A1 (de) Fahrzeugstürstellantrieb
EP1748130A2 (de) Kraftfahrzeugtürschloss
KR102634737B1 (ko) 자동차 도어 로크
JP2000515595A (ja) 自動車用ドアロック
US5029915A (en) Vehicle door locking system
EP1053377B1 (de) Kraftfahrzeugstürverriegelung
EP0959205B1 (de) Fahrzeugtürschloss
PL178100B1 (pl) Zamek uruchamiany elektrycznie, zwłaszcza do drzwi pojazdu
GB2334297A (en) Vehicle door lock with controlled pawl locking mechanism
US6213524B1 (en) Rotary link deadbolt locking actuator and method
GB2306552A (en) Vehicle door lock superlocking actuator
JPH08218710A (ja) イージクローザ装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19871208

17Q First examination report despatched

Effective date: 19880914

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19891030

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JEAVONS, PHILIP SWINGEWOOD